11th grade

a man whose mass is 75 kg walks up to 10 steps, each 20 cm high, in 5sec .what is the work done?

  1. 0
  2. 3
asked by pranshu
  1. Please select the correct School Subject so a teacher of that subject will read and answer your post.

    Sra

    1. 0
    posted by SraJMcGin
  2. The work done does not depend upon how long it takes. (But the POWER does). Work is the product of mass, the acceleration of gravity, and the elevation gain.

    In your case, that is

    W = M g H = 75 kg*9.8 m/s^2*2.0 m
    = 1470 Joules

    1. 0
    posted by drwls

Respond to this Question

First Name

Your Response

Similar Questions

  1. Science

    A man whose is 75kg walks up a flight of 5.12 steps each 20cm hight in 5second. Find the power developed in walks.
  2. physics

    a dog walks 28 steps north and then walks 55 steps west. if the daog walks back to the starting point in a straight line, how many steps will the dog take? find the magnitude of the net displacement
  3. physics

    A man whose mass is 75kg walks up a flight of 12 steps each 20 cm high in 5 seconds . Find the power he develops in watts
  4. science

    the man walks 20 steps forward from point A to point B and moves 5 more steps to C
  5. physics

    a moving sidewalk in an airport terminal building moves 1.00 m/s and is 150.0 m long.If man steps on at one end and walks 2.0 m/s relative to the moving sidewalk, how much time does he require to reach the opposite end if he walks
  6. maths-perimeter

    A circular pond has a 95cm wide foot path along the edge.A man walks around theouter edge of te footpath of 55cm long steps.In 640 steps he makes a full round.What is the radius of the pond
  7. physics

    a man steps out of a rowboat into a dock. The man has a mass of 80 kg and moves forward with a velocity of 1.5 m/s. If the boat has a mass of 120 kg. and was initially at rest, what is its final velocity?
  8. algebra

    Dori and Malory are tracking their steps taken as a health goal. Dori leaves her house at 12:00 p.m. and walks at 50 steps per minute. Malory leaves her house at 12:20 p.m. and walks at 90 steps per minute. At what time will
  9. Physics

    A child of mass 40 kg stands beside a circular platform of mass 115 kg and radius 1.6 m spinning at 3.8 rad/s. Treat the platform as a disk. The child steps on the rim. a) What is the new angular speed; b) She then walks to the
  10. physics

    A child of mass 40 kg stands beside a circular platform of mass 90 kg and radius 1.6 m spinning at 2.8 rad/s. Treat the platform as a disk. The child steps on the rim. a) What is the new angular speed; b) She then walks to the

More Similar Questions